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Finding the Fourth Proportional to 672.12, 927.55 and 377.38

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Solution

The fourth proportional to 672.12, 927.55 and 377.38 is: 520.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.12 : 927.55 = 377.38 : x
  2. Step 2: Convert to fraction form
    672.12/927.55 = 377.38/x
  3. Step 3: Cross multiply
    672.12x = 927.55 × 377.38
  4. Step 4: Simplify right side
    672.12x = 350,038.82
  5. Step 5: Solve for x
    x = 350,038.82/672.12
  6. Step 6: Final answer
    x = 520.80

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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.