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Finding the Fourth Proportional to 985.98, 1,479.51 and 601.50

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Solution

The fourth proportional to 985.98, 1,479.51 and 601.50 is: 902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.98 : 1,479.51 = 601.50 : x
  2. Step 2: Convert to fraction form
    985.98/1,479.51 = 601.50/x
  3. Step 3: Cross multiply
    985.98x = 1,479.51 × 601.50
  4. Step 4: Simplify right side
    985.98x = 889,925.27
  5. Step 5: Solve for x
    x = 889,925.27/985.98
  6. Step 6: Final answer
    x = 902.58

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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.