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Finding the Fourth Proportional to 1,054.67, 1,455.41 and 582.55

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Solution

The fourth proportional to 1,054.67, 1,455.41 and 582.55 is: 803.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.67 : 1,455.41 = 582.55 : x
  2. Step 2: Convert to fraction form
    1,054.67/1,455.41 = 582.55/x
  3. Step 3: Cross multiply
    1,054.67x = 1,455.41 × 582.55
  4. Step 4: Simplify right side
    1,054.67x = 847,854.01
  5. Step 5: Solve for x
    x = 847,854.01/1,054.67
  6. Step 6: Final answer
    x = 803.91

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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.