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Finding the Fourth Proportional to 750.04, 1,124.98 and 316.60

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Solution

The fourth proportional to 750.04, 1,124.98 and 316.60 is: 474.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.04 : 1,124.98 = 316.60 : x
  2. Step 2: Convert to fraction form
    750.04/1,124.98 = 316.60/x
  3. Step 3: Cross multiply
    750.04x = 1,124.98 × 316.60
  4. Step 4: Simplify right side
    750.04x = 356,168.67
  5. Step 5: Solve for x
    x = 356,168.67/750.04
  6. Step 6: Final answer
    x = 474.87

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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.