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Finding the Fourth Proportional to 529.02, 729.78 and 332.16

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Solution

The fourth proportional to 529.02, 729.78 and 332.16 is: 458.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.02 : 729.78 = 332.16 : x
  2. Step 2: Convert to fraction form
    529.02/729.78 = 332.16/x
  3. Step 3: Cross multiply
    529.02x = 729.78 × 332.16
  4. Step 4: Simplify right side
    529.02x = 242,403.72
  5. Step 5: Solve for x
    x = 242,403.72/529.02
  6. Step 6: Final answer
    x = 458.21

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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.