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Finding the Fourth Proportional to 1,347.48, 1,860.03 and 954.90

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Solution

The fourth proportional to 1,347.48, 1,860.03 and 954.90 is: 1,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.48 : 1,860.03 = 954.90 : x
  2. Step 2: Convert to fraction form
    1,347.48/1,860.03 = 954.90/x
  3. Step 3: Cross multiply
    1,347.48x = 1,860.03 × 954.90
  4. Step 4: Simplify right side
    1,347.48x = 1,776,142.65
  5. Step 5: Solve for x
    x = 1,776,142.65/1,347.48
  6. Step 6: Final answer
    x = 1,318.12

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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.