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Finding the Fourth Proportional to 672.92, 926.50 and 611.40

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Solution

The fourth proportional to 672.92, 926.50 and 611.40 is: 841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.92 : 926.50 = 611.40 : x
  2. Step 2: Convert to fraction form
    672.92/926.50 = 611.40/x
  3. Step 3: Cross multiply
    672.92x = 926.50 × 611.40
  4. Step 4: Simplify right side
    672.92x = 566,462.10
  5. Step 5: Solve for x
    x = 566,462.10/672.92
  6. Step 6: Final answer
    x = 841.80

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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.