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Finding the Fourth Proportional to 528.88, 729.88 and 332.40

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Solution

The fourth proportional to 528.88, 729.88 and 332.40 is: 458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.88 : 729.88 = 332.40 : x
  2. Step 2: Convert to fraction form
    528.88/729.88 = 332.40/x
  3. Step 3: Cross multiply
    528.88x = 729.88 × 332.40
  4. Step 4: Simplify right side
    528.88x = 242,612.11
  5. Step 5: Solve for x
    x = 242,612.11/528.88
  6. Step 6: Final answer
    x = 458.73

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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.