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Finding the Fourth Proportional to 407.92, 562.93 and 242.15

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Solution

The fourth proportional to 407.92, 562.93 and 242.15 is: 334.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.92 : 562.93 = 242.15 : x
  2. Step 2: Convert to fraction form
    407.92/562.93 = 242.15/x
  3. Step 3: Cross multiply
    407.92x = 562.93 × 242.15
  4. Step 4: Simplify right side
    407.92x = 136,313.50
  5. Step 5: Solve for x
    x = 136,313.50/407.92
  6. Step 6: Final answer
    x = 334.17

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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.