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Finding the Fourth Proportional to 585.36, 877.80 and 276.90

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Solution

The fourth proportional to 585.36, 877.80 and 276.90 is: 415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.36 : 877.80 = 276.90 : x
  2. Step 2: Convert to fraction form
    585.36/877.80 = 276.90/x
  3. Step 3: Cross multiply
    585.36x = 877.80 × 276.90
  4. Step 4: Simplify right side
    585.36x = 243,062.82
  5. Step 5: Solve for x
    x = 243,062.82/585.36
  6. Step 6: Final answer
    x = 415.24

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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.