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Finding the Fourth Proportional to 610.82, 842.86 and 345.24

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Solution

The fourth proportional to 610.82, 842.86 and 345.24 is: 476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.82 : 842.86 = 345.24 : x
  2. Step 2: Convert to fraction form
    610.82/842.86 = 345.24/x
  3. Step 3: Cross multiply
    610.82x = 842.86 × 345.24
  4. Step 4: Simplify right side
    610.82x = 290,985.11
  5. Step 5: Solve for x
    x = 290,985.11/610.82
  6. Step 6: Final answer
    x = 476.39

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1.5x scale

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.