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Finding the Fourth Proportional to 633.40, 947.78 and 373.52

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Solution

The fourth proportional to 633.40, 947.78 and 373.52 is: 558.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.40 : 947.78 = 373.52 : x
  2. Step 2: Convert to fraction form
    633.40/947.78 = 373.52/x
  3. Step 3: Cross multiply
    633.40x = 947.78 × 373.52
  4. Step 4: Simplify right side
    633.40x = 354,013.46
  5. Step 5: Solve for x
    x = 354,013.46/633.40
  6. Step 6: Final answer
    x = 558.91

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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.