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Finding the Fourth Proportional to 601.99, 830.70 and 339.95

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Solution

The fourth proportional to 601.99, 830.70 and 339.95 is: 469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.99 : 830.70 = 339.95 : x
  2. Step 2: Convert to fraction form
    601.99/830.70 = 339.95/x
  3. Step 3: Cross multiply
    601.99x = 830.70 × 339.95
  4. Step 4: Simplify right side
    601.99x = 282,396.47
  5. Step 5: Solve for x
    x = 282,396.47/601.99
  6. Step 6: Final answer
    x = 469.10

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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.