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Finding the Fourth Proportional to 925.20, 1,276.85 and 526.93

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Solution

The fourth proportional to 925.20, 1,276.85 and 526.93 is: 727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.20 : 1,276.85 = 526.93 : x
  2. Step 2: Convert to fraction form
    925.20/1,276.85 = 526.93/x
  3. Step 3: Cross multiply
    925.20x = 1,276.85 × 526.93
  4. Step 4: Simplify right side
    925.20x = 672,808.70
  5. Step 5: Solve for x
    x = 672,808.70/925.20
  6. Step 6: Final answer
    x = 727.20

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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.