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Finding the Fourth Proportional to 928.75, 1,393.67 and 373.35

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Solution

The fourth proportional to 928.75, 1,393.67 and 373.35 is: 560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.75 : 1,393.67 = 373.35 : x
  2. Step 2: Convert to fraction form
    928.75/1,393.67 = 373.35/x
  3. Step 3: Cross multiply
    928.75x = 1,393.67 × 373.35
  4. Step 4: Simplify right side
    928.75x = 520,321.48
  5. Step 5: Solve for x
    x = 520,321.48/928.75
  6. Step 6: Final answer
    x = 560.24

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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.