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Finding the Fourth Proportional to 529.79, 729.50 and 382.14

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Solution

The fourth proportional to 529.79, 729.50 and 382.14 is: 526.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.79 : 729.50 = 382.14 : x
  2. Step 2: Convert to fraction form
    529.79/729.50 = 382.14/x
  3. Step 3: Cross multiply
    529.79x = 729.50 × 382.14
  4. Step 4: Simplify right side
    529.79x = 278,769.22
  5. Step 5: Solve for x
    x = 278,769.22/529.79
  6. Step 6: Final answer
    x = 526.19

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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.