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Finding the Fourth Proportional to 1,007.04, 1,389.74 and 754.53

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Solution

The fourth proportional to 1,007.04, 1,389.74 and 754.53 is: 1,041.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007.04 : 1,389.74 = 754.53 : x
  2. Step 2: Convert to fraction form
    1,007.04/1,389.74 = 754.53/x
  3. Step 3: Cross multiply
    1,007.04x = 1,389.74 × 754.53
  4. Step 4: Simplify right side
    1,007.04x = 1,048,595.78
  5. Step 5: Solve for x
    x = 1,048,595.78/1,007.04
  6. Step 6: Final answer
    x = 1,041.26

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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.