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Finding the Fourth Proportional to 1,031.89, 1,547.82 and 262.39

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Solution

The fourth proportional to 1,031.89, 1,547.82 and 262.39 is: 393.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.89 : 1,547.82 = 262.39 : x
  2. Step 2: Convert to fraction form
    1,031.89/1,547.82 = 262.39/x
  3. Step 3: Cross multiply
    1,031.89x = 1,547.82 × 262.39
  4. Step 4: Simplify right side
    1,031.89x = 406,132.49
  5. Step 5: Solve for x
    x = 406,132.49/1,031.89
  6. Step 6: Final answer
    x = 393.58

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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.