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Finding the Fourth Proportional to 1,348.25, 1,860.10 and 758.63

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Solution

The fourth proportional to 1,348.25, 1,860.10 and 758.63 is: 1,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.25 : 1,860.10 = 758.63 : x
  2. Step 2: Convert to fraction form
    1,348.25/1,860.10 = 758.63/x
  3. Step 3: Cross multiply
    1,348.25x = 1,860.10 × 758.63
  4. Step 4: Simplify right side
    1,348.25x = 1,411,130.42
  5. Step 5: Solve for x
    x = 1,411,130.42/1,348.25
  6. Step 6: Final answer
    x = 1,046.64

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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.