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Finding the Fourth Proportional to 925.06, 1,386.73 and 347.50

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Solution

The fourth proportional to 925.06, 1,386.73 and 347.50 is: 520.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.06 : 1,386.73 = 347.50 : x
  2. Step 2: Convert to fraction form
    925.06/1,386.73 = 347.50/x
  3. Step 3: Cross multiply
    925.06x = 1,386.73 × 347.50
  4. Step 4: Simplify right side
    925.06x = 481,888.68
  5. Step 5: Solve for x
    x = 481,888.68/925.06
  6. Step 6: Final answer
    x = 520.93

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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.