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Finding the Fourth Proportional to 738.48, 1,108.40 and 373.52

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Solution

The fourth proportional to 738.48, 1,108.40 and 373.52 is: 560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.48 : 1,108.40 = 373.52 : x
  2. Step 2: Convert to fraction form
    738.48/1,108.40 = 373.52/x
  3. Step 3: Cross multiply
    738.48x = 1,108.40 × 373.52
  4. Step 4: Simplify right side
    738.48x = 414,013.27
  5. Step 5: Solve for x
    x = 414,013.27/738.48
  6. Step 6: Final answer
    x = 560.63

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1.5x scale

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.