Home / 749.03-1,123.45-316.13

Finding the Fourth Proportional to 749.03, 1,123.45 and 316.13

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Solution

The fourth proportional to 749.03, 1,123.45 and 316.13 is: 474.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.03 : 1,123.45 = 316.13 : x
  2. Step 2: Convert to fraction form
    749.03/1,123.45 = 316.13/x
  3. Step 3: Cross multiply
    749.03x = 1,123.45 × 316.13
  4. Step 4: Simplify right side
    749.03x = 355,149.84
  5. Step 5: Solve for x
    x = 355,149.84/749.03
  6. Step 6: Final answer
    x = 474.15

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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.