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Finding the Fourth Proportional to 528.75, 729.54 and 332.22

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Solution

The fourth proportional to 528.75, 729.54 and 332.22 is: 458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.75 : 729.54 = 332.22 : x
  2. Step 2: Convert to fraction form
    528.75/729.54 = 332.22/x
  3. Step 3: Cross multiply
    528.75x = 729.54 × 332.22
  4. Step 4: Simplify right side
    528.75x = 242,367.78
  5. Step 5: Solve for x
    x = 242,367.78/528.75
  6. Step 6: Final answer
    x = 458.38

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Find fourth proportional to 264.38, 364.77 and 166.11
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Double scale
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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.