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Finding the Fourth Proportional to 530.25, 731.75 and 294.21

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Solution

The fourth proportional to 530.25, 731.75 and 294.21 is: 406.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.25 : 731.75 = 294.21 : x
  2. Step 2: Convert to fraction form
    530.25/731.75 = 294.21/x
  3. Step 3: Cross multiply
    530.25x = 731.75 × 294.21
  4. Step 4: Simplify right side
    530.25x = 215,288.17
  5. Step 5: Solve for x
    x = 215,288.17/530.25
  6. Step 6: Final answer
    x = 406.01

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.