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Finding the Fourth Proportional to 601.56, 830.10 and 339.56

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Solution

The fourth proportional to 601.56, 830.10 and 339.56 is: 468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.56 : 830.10 = 339.56 : x
  2. Step 2: Convert to fraction form
    601.56/830.10 = 339.56/x
  3. Step 3: Cross multiply
    601.56x = 830.10 × 339.56
  4. Step 4: Simplify right side
    601.56x = 281,868.76
  5. Step 5: Solve for x
    x = 281,868.76/601.56
  6. Step 6: Final answer
    x = 468.56

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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.