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Finding the Fourth Proportional to 924.47, 1,386.91 and 347.34

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Solution

The fourth proportional to 924.47, 1,386.91 and 347.34 is: 521.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.47 : 1,386.91 = 347.34 : x
  2. Step 2: Convert to fraction form
    924.47/1,386.91 = 347.34/x
  3. Step 3: Cross multiply
    924.47x = 1,386.91 × 347.34
  4. Step 4: Simplify right side
    924.47x = 481,733.00
  5. Step 5: Solve for x
    x = 481,733.00/924.47
  6. Step 6: Final answer
    x = 521.09

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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.