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Finding the Fourth Proportional to 948.77, 1,420.78 and 601.06

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Solution

The fourth proportional to 948.77, 1,420.78 and 601.06 is: 900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.77 : 1,420.78 = 601.06 : x
  2. Step 2: Convert to fraction form
    948.77/1,420.78 = 601.06/x
  3. Step 3: Cross multiply
    948.77x = 1,420.78 × 601.06
  4. Step 4: Simplify right side
    948.77x = 853,974.03
  5. Step 5: Solve for x
    x = 853,974.03/948.77
  6. Step 6: Final answer
    x = 900.09

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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.