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Finding the Fourth Proportional to 652.11, 977.60 and 615.87

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Solution

The fourth proportional to 652.11, 977.60 and 615.87 is: 923.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.11 : 977.60 = 615.87 : x
  2. Step 2: Convert to fraction form
    652.11/977.60 = 615.87/x
  3. Step 3: Cross multiply
    652.11x = 977.60 × 615.87
  4. Step 4: Simplify right side
    652.11x = 602,074.51
  5. Step 5: Solve for x
    x = 602,074.51/652.11
  6. Step 6: Final answer
    x = 923.27

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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.