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Finding the Fourth Proportional to 704.17, 1,054.66 and 339.22

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Solution

The fourth proportional to 704.17, 1,054.66 and 339.22 is: 508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.17 : 1,054.66 = 339.22 : x
  2. Step 2: Convert to fraction form
    704.17/1,054.66 = 339.22/x
  3. Step 3: Cross multiply
    704.17x = 1,054.66 × 339.22
  4. Step 4: Simplify right side
    704.17x = 357,761.77
  5. Step 5: Solve for x
    x = 357,761.77/704.17
  6. Step 6: Final answer
    x = 508.06

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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.