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Finding the Fourth Proportional to 529.32, 730.55 and 296.45

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Solution

The fourth proportional to 529.32, 730.55 and 296.45 is: 409.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.32 : 730.55 = 296.45 : x
  2. Step 2: Convert to fraction form
    529.32/730.55 = 296.45/x
  3. Step 3: Cross multiply
    529.32x = 730.55 × 296.45
  4. Step 4: Simplify right side
    529.32x = 216,571.55
  5. Step 5: Solve for x
    x = 216,571.55/529.32
  6. Step 6: Final answer
    x = 409.15

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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.