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Finding the Fourth Proportional to 1,294.93, 1,941.94 and 417.40

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Solution

The fourth proportional to 1,294.93, 1,941.94 and 417.40 is: 625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.93 : 1,941.94 = 417.40 : x
  2. Step 2: Convert to fraction form
    1,294.93/1,941.94 = 417.40/x
  3. Step 3: Cross multiply
    1,294.93x = 1,941.94 × 417.40
  4. Step 4: Simplify right side
    1,294.93x = 810,565.76
  5. Step 5: Solve for x
    x = 810,565.76/1,294.93
  6. Step 6: Final answer
    x = 625.95

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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.