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Finding the Fourth Proportional to 657.18, 908.55 and 575.10

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Solution

The fourth proportional to 657.18, 908.55 and 575.10 is: 795.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.18 : 908.55 = 575.10 : x
  2. Step 2: Convert to fraction form
    657.18/908.55 = 575.10/x
  3. Step 3: Cross multiply
    657.18x = 908.55 × 575.10
  4. Step 4: Simplify right side
    657.18x = 522,507.11
  5. Step 5: Solve for x
    x = 522,507.11/657.18
  6. Step 6: Final answer
    x = 795.07

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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.