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Finding the Fourth Proportional to 1,307.52, 1,806.71 and 1,029.88

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Solution

The fourth proportional to 1,307.52, 1,806.71 and 1,029.88 is: 1,423.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.52 : 1,806.71 = 1,029.88 : x
  2. Step 2: Convert to fraction form
    1,307.52/1,806.71 = 1,029.88/x
  3. Step 3: Cross multiply
    1,307.52x = 1,806.71 × 1,029.88
  4. Step 4: Simplify right side
    1,307.52x = 1,860,694.49
  5. Step 5: Solve for x
    x = 1,860,694.49/1,307.52
  6. Step 6: Final answer
    x = 1,423.07

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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.