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Finding the Fourth Proportional to 753.71, 1,130.56 and 368.69

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Solution

The fourth proportional to 753.71, 1,130.56 and 368.69 is: 553.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.71 : 1,130.56 = 368.69 : x
  2. Step 2: Convert to fraction form
    753.71/1,130.56 = 368.69/x
  3. Step 3: Cross multiply
    753.71x = 1,130.56 × 368.69
  4. Step 4: Simplify right side
    753.71x = 416,824.26
  5. Step 5: Solve for x
    x = 416,824.26/753.71
  6. Step 6: Final answer
    x = 553.03

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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.