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Finding the Fourth Proportional to 1,026.20, 1,416.08 and 584.00

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Solution

The fourth proportional to 1,026.20, 1,416.08 and 584.00 is: 805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.20 : 1,416.08 = 584.00 : x
  2. Step 2: Convert to fraction form
    1,026.20/1,416.08 = 584.00/x
  3. Step 3: Cross multiply
    1,026.20x = 1,416.08 × 584.00
  4. Step 4: Simplify right side
    1,026.20x = 826,980.72
  5. Step 5: Solve for x
    x = 826,980.72/1,026.20
  6. Step 6: Final answer
    x = 805.87

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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.