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Finding the Fourth Proportional to 1,283.15, 1,924.86 and 417.26

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Solution

The fourth proportional to 1,283.15, 1,924.86 and 417.26 is: 625.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.15 : 1,924.86 = 417.26 : x
  2. Step 2: Convert to fraction form
    1,283.15/1,924.86 = 417.26/x
  3. Step 3: Cross multiply
    1,283.15x = 1,924.86 × 417.26
  4. Step 4: Simplify right side
    1,283.15x = 803,167.08
  5. Step 5: Solve for x
    x = 803,167.08/1,283.15
  6. Step 6: Final answer
    x = 625.93

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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.