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Finding the Fourth Proportional to 524.28, 723.52 and 288.20

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Solution

The fourth proportional to 524.28, 723.52 and 288.20 is: 397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.28 : 723.52 = 288.20 : x
  2. Step 2: Convert to fraction form
    524.28/723.52 = 288.20/x
  3. Step 3: Cross multiply
    524.28x = 723.52 × 288.20
  4. Step 4: Simplify right side
    524.28x = 208,518.46
  5. Step 5: Solve for x
    x = 208,518.46/524.28
  6. Step 6: Final answer
    x = 397.72

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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.