Home / 1,118.13-1,677.28-348.63

Finding the Fourth Proportional to 1,118.13, 1,677.28 and 348.63

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Solution

The fourth proportional to 1,118.13, 1,677.28 and 348.63 is: 522.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.13 : 1,677.28 = 348.63 : x
  2. Step 2: Convert to fraction form
    1,118.13/1,677.28 = 348.63/x
  3. Step 3: Cross multiply
    1,118.13x = 1,677.28 × 348.63
  4. Step 4: Simplify right side
    1,118.13x = 584,750.13
  5. Step 5: Solve for x
    x = 584,750.13/1,118.13
  6. Step 6: Final answer
    x = 522.97

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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.