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Finding the Fourth Proportional to 907.00, 1,358.34 and 521.44

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Solution

The fourth proportional to 907.00, 1,358.34 and 521.44 is: 780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.00 : 1,358.34 = 521.44 : x
  2. Step 2: Convert to fraction form
    907.00/1,358.34 = 521.44/x
  3. Step 3: Cross multiply
    907.00x = 1,358.34 × 521.44
  4. Step 4: Simplify right side
    907.00x = 708,287.46
  5. Step 5: Solve for x
    x = 708,287.46/907.00
  6. Step 6: Final answer
    x = 780.91

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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.