Home / 1,342.08-2,013.76-476.80

Finding the Fourth Proportional to 1,342.08, 2,013.76 and 476.80

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Solution

The fourth proportional to 1,342.08, 2,013.76 and 476.80 is: 715.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.08 : 2,013.76 = 476.80 : x
  2. Step 2: Convert to fraction form
    1,342.08/2,013.76 = 476.80/x
  3. Step 3: Cross multiply
    1,342.08x = 2,013.76 × 476.80
  4. Step 4: Simplify right side
    1,342.08x = 960,160.77
  5. Step 5: Solve for x
    x = 960,160.77/1,342.08
  6. Step 6: Final answer
    x = 715.43

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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.