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Finding the Fourth Proportional to 601.91, 830.63 and 339.92

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Solution

The fourth proportional to 601.91, 830.63 and 339.92 is: 469.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.91 : 830.63 = 339.92 : x
  2. Step 2: Convert to fraction form
    601.91/830.63 = 339.92/x
  3. Step 3: Cross multiply
    601.91x = 830.63 × 339.92
  4. Step 4: Simplify right side
    601.91x = 282,341.90
  5. Step 5: Solve for x
    x = 282,341.90/601.91
  6. Step 6: Final answer
    x = 469.08

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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.