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Finding the Fourth Proportional to 948.60, 1,419.19 and 624.60

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Solution

The fourth proportional to 948.60, 1,419.19 and 624.60 is: 934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    948.60 : 1,419.19 = 624.60 : x
  2. Step 2: Convert to fraction form
    948.60/1,419.19 = 624.60/x
  3. Step 3: Cross multiply
    948.60x = 1,419.19 × 624.60
  4. Step 4: Simplify right side
    948.60x = 886,424.51
  5. Step 5: Solve for x
    x = 886,424.51/948.60
  6. Step 6: Final answer
    x = 934.46

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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.