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Finding the Fourth Proportional to 528.50, 729.64 and 342.26

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Solution

The fourth proportional to 528.50, 729.64 and 342.26 is: 472.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.50 : 729.64 = 342.26 : x
  2. Step 2: Convert to fraction form
    528.50/729.64 = 342.26/x
  3. Step 3: Cross multiply
    528.50x = 729.64 × 342.26
  4. Step 4: Simplify right side
    528.50x = 249,726.59
  5. Step 5: Solve for x
    x = 249,726.59/528.50
  6. Step 6: Final answer
    x = 472.52

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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.