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Finding the Fourth Proportional to 407.93, 563.02 and 242.15

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Solution

The fourth proportional to 407.93, 563.02 and 242.15 is: 334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.93 : 563.02 = 242.15 : x
  2. Step 2: Convert to fraction form
    407.93/563.02 = 242.15/x
  3. Step 3: Cross multiply
    407.93x = 563.02 × 242.15
  4. Step 4: Simplify right side
    407.93x = 136,336.10
  5. Step 5: Solve for x
    x = 136,336.10/407.93
  6. Step 6: Final answer
    x = 334.21

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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.