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Finding the Fourth Proportional to 587.69, 810.66 and 377.79

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Solution

The fourth proportional to 587.69, 810.66 and 377.79 is: 521.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.69 : 810.66 = 377.79 : x
  2. Step 2: Convert to fraction form
    587.69/810.66 = 377.79/x
  3. Step 3: Cross multiply
    587.69x = 810.66 × 377.79
  4. Step 4: Simplify right side
    587.69x = 306,259.24
  5. Step 5: Solve for x
    x = 306,259.24/587.69
  6. Step 6: Final answer
    x = 521.13

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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.