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Finding the Fourth Proportional to 890.86, 1,336.30 and 584.66

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Solution

The fourth proportional to 890.86, 1,336.30 and 584.66 is: 877.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.86 : 1,336.30 = 584.66 : x
  2. Step 2: Convert to fraction form
    890.86/1,336.30 = 584.66/x
  3. Step 3: Cross multiply
    890.86x = 1,336.30 × 584.66
  4. Step 4: Simplify right side
    890.86x = 781,281.16
  5. Step 5: Solve for x
    x = 781,281.16/890.86
  6. Step 6: Final answer
    x = 877.00

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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.