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Finding the Fourth Proportional to 541.66, 748.63 and 521.18

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Solution

The fourth proportional to 541.66, 748.63 and 521.18 is: 720.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.66 : 748.63 = 521.18 : x
  2. Step 2: Convert to fraction form
    541.66/748.63 = 521.18/x
  3. Step 3: Cross multiply
    541.66x = 748.63 × 521.18
  4. Step 4: Simplify right side
    541.66x = 390,170.98
  5. Step 5: Solve for x
    x = 390,170.98/541.66
  6. Step 6: Final answer
    x = 720.32

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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.