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Finding the Fourth Proportional to 473.65, 710.24 and 278.71

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Solution

The fourth proportional to 473.65, 710.24 and 278.71 is: 417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.65 : 710.24 = 278.71 : x
  2. Step 2: Convert to fraction form
    473.65/710.24 = 278.71/x
  3. Step 3: Cross multiply
    473.65x = 710.24 × 278.71
  4. Step 4: Simplify right side
    473.65x = 197,949.60
  5. Step 5: Solve for x
    x = 197,949.60/473.65
  6. Step 6: Final answer
    x = 417.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.