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Finding the Fourth Proportional to 1,510.88, 2,267.33 and 645.39

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Solution

The fourth proportional to 1,510.88, 2,267.33 and 645.39 is: 968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.88 : 2,267.33 = 645.39 : x
  2. Step 2: Convert to fraction form
    1,510.88/2,267.33 = 645.39/x
  3. Step 3: Cross multiply
    1,510.88x = 2,267.33 × 645.39
  4. Step 4: Simplify right side
    1,510.88x = 1,463,308.88
  5. Step 5: Solve for x
    x = 1,463,308.88/1,510.88
  6. Step 6: Final answer
    x = 968.52

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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.