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Finding the Fourth Proportional to 1,576.68, 2,365 and 710.38

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Solution

The fourth proportional to 1,576.68, 2,365 and 710.38 is: 1,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.68 : 2,365 = 710.38 : x
  2. Step 2: Convert to fraction form
    1,576.68/2,365 = 710.38/x
  3. Step 3: Cross multiply
    1,576.68x = 2,365 × 710.38
  4. Step 4: Simplify right side
    1,576.68x = 1,680,048.70
  5. Step 5: Solve for x
    x = 1,680,048.70/1,576.68
  6. Step 6: Final answer
    x = 1,065.56

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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.