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Finding the Fourth Proportional to 540.17, 744.95 and 457.19

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Solution

The fourth proportional to 540.17, 744.95 and 457.19 is: 630.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.17 : 744.95 = 457.19 : x
  2. Step 2: Convert to fraction form
    540.17/744.95 = 457.19/x
  3. Step 3: Cross multiply
    540.17x = 744.95 × 457.19
  4. Step 4: Simplify right side
    540.17x = 340,583.69
  5. Step 5: Solve for x
    x = 340,583.69/540.17
  6. Step 6: Final answer
    x = 630.51

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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.