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Finding the Fourth Proportional to 587.07, 813.86 and 555.86

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Solution

The fourth proportional to 587.07, 813.86 and 555.86 is: 770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.07 : 813.86 = 555.86 : x
  2. Step 2: Convert to fraction form
    587.07/813.86 = 555.86/x
  3. Step 3: Cross multiply
    587.07x = 813.86 × 555.86
  4. Step 4: Simplify right side
    587.07x = 452,392.22
  5. Step 5: Solve for x
    x = 452,392.22/587.07
  6. Step 6: Final answer
    x = 770.59

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.