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Finding the Fourth Proportional to 1,302.32, 1,798.80 and 1,053.92

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Solution

The fourth proportional to 1,302.32, 1,798.80 and 1,053.92 is: 1,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.32 : 1,798.80 = 1,053.92 : x
  2. Step 2: Convert to fraction form
    1,302.32/1,798.80 = 1,053.92/x
  3. Step 3: Cross multiply
    1,302.32x = 1,798.80 × 1,053.92
  4. Step 4: Simplify right side
    1,302.32x = 1,895,791.30
  5. Step 5: Solve for x
    x = 1,895,791.30/1,302.32
  6. Step 6: Final answer
    x = 1,455.70

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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.