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Finding the Fourth Proportional to 521.00, 781.52 and 174.32

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Solution

The fourth proportional to 521.00, 781.52 and 174.32 is: 261.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.00 : 781.52 = 174.32 : x
  2. Step 2: Convert to fraction form
    521.00/781.52 = 174.32/x
  3. Step 3: Cross multiply
    521.00x = 781.52 × 174.32
  4. Step 4: Simplify right side
    521.00x = 136,232.72
  5. Step 5: Solve for x
    x = 136,232.72/521.00
  6. Step 6: Final answer
    x = 261.48

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Find fourth proportional to 260.50, 390.76 and 87.16
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.