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Finding the Fourth Proportional to 410.40, 614.84 and 342.36

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Solution

The fourth proportional to 410.40, 614.84 and 342.36 is: 512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.40 : 614.84 = 342.36 : x
  2. Step 2: Convert to fraction form
    410.40/614.84 = 342.36/x
  3. Step 3: Cross multiply
    410.40x = 614.84 × 342.36
  4. Step 4: Simplify right side
    410.40x = 210,494.91
  5. Step 5: Solve for x
    x = 210,494.91/410.40
  6. Step 6: Final answer
    x = 512.90

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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.