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Finding the Fourth Proportional to 1,010.45, 1,514.67 and 425.61

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Solution

The fourth proportional to 1,010.45, 1,514.67 and 425.61 is: 638.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.45 : 1,514.67 = 425.61 : x
  2. Step 2: Convert to fraction form
    1,010.45/1,514.67 = 425.61/x
  3. Step 3: Cross multiply
    1,010.45x = 1,514.67 × 425.61
  4. Step 4: Simplify right side
    1,010.45x = 644,665.97
  5. Step 5: Solve for x
    x = 644,665.97/1,010.45
  6. Step 6: Final answer
    x = 638.00

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1.5x scale

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.