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Finding the Fourth Proportional to 1,010.01, 1,515.15 and 432.75

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Solution

The fourth proportional to 1,010.01, 1,515.15 and 432.75 is: 649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.01 : 1,515.15 = 432.75 : x
  2. Step 2: Convert to fraction form
    1,010.01/1,515.15 = 432.75/x
  3. Step 3: Cross multiply
    1,010.01x = 1,515.15 × 432.75
  4. Step 4: Simplify right side
    1,010.01x = 655,681.16
  5. Step 5: Solve for x
    x = 655,681.16/1,010.01
  6. Step 6: Final answer
    x = 649.18

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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.