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Finding the Fourth Proportional to 410.18, 565.02 and 285.62

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Solution

The fourth proportional to 410.18, 565.02 and 285.62 is: 393.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.18 : 565.02 = 285.62 : x
  2. Step 2: Convert to fraction form
    410.18/565.02 = 285.62/x
  3. Step 3: Cross multiply
    410.18x = 565.02 × 285.62
  4. Step 4: Simplify right side
    410.18x = 161,378.19
  5. Step 5: Solve for x
    x = 161,378.19/410.18
  6. Step 6: Final answer
    x = 393.44

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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.