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Finding the Fourth Proportional to 928.04, 1,279.14 and 740.93

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Solution

The fourth proportional to 928.04, 1,279.14 and 740.93 is: 1,021.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.04 : 1,279.14 = 740.93 : x
  2. Step 2: Convert to fraction form
    928.04/1,279.14 = 740.93/x
  3. Step 3: Cross multiply
    928.04x = 1,279.14 × 740.93
  4. Step 4: Simplify right side
    928.04x = 947,753.20
  5. Step 5: Solve for x
    x = 947,753.20/928.04
  6. Step 6: Final answer
    x = 1,021.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.