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Finding the Fourth Proportional to 1,087.74, 1,501.00 and 615.67

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Solution

The fourth proportional to 1,087.74, 1,501.00 and 615.67 is: 849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.74 : 1,501.00 = 615.67 : x
  2. Step 2: Convert to fraction form
    1,087.74/1,501.00 = 615.67/x
  3. Step 3: Cross multiply
    1,087.74x = 1,501.00 × 615.67
  4. Step 4: Simplify right side
    1,087.74x = 924,115.38
  5. Step 5: Solve for x
    x = 924,115.38/1,087.74
  6. Step 6: Final answer
    x = 849.57

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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.