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Finding the Fourth Proportional to 652.69, 901.47 and 553.45

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Solution

The fourth proportional to 652.69, 901.47 and 553.45 is: 764.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.69 : 901.47 = 553.45 : x
  2. Step 2: Convert to fraction form
    652.69/901.47 = 553.45/x
  3. Step 3: Cross multiply
    652.69x = 901.47 × 553.45
  4. Step 4: Simplify right side
    652.69x = 498,918.57
  5. Step 5: Solve for x
    x = 498,918.57/652.69
  6. Step 6: Final answer
    x = 764.40

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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.