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Finding the Fourth Proportional to 1,027.43, 1,417.85 and 555.33

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Solution

The fourth proportional to 1,027.43, 1,417.85 and 555.33 is: 766.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.43 : 1,417.85 = 555.33 : x
  2. Step 2: Convert to fraction form
    1,027.43/1,417.85 = 555.33/x
  3. Step 3: Cross multiply
    1,027.43x = 1,417.85 × 555.33
  4. Step 4: Simplify right side
    1,027.43x = 787,374.64
  5. Step 5: Solve for x
    x = 787,374.64/1,027.43
  6. Step 6: Final answer
    x = 766.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.