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Finding the Fourth Proportional to 587.55, 810.51 and 438.33

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Solution

The fourth proportional to 587.55, 810.51 and 438.33 is: 604.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.55 : 810.51 = 438.33 : x
  2. Step 2: Convert to fraction form
    587.55/810.51 = 438.33/x
  3. Step 3: Cross multiply
    587.55x = 810.51 × 438.33
  4. Step 4: Simplify right side
    587.55x = 355,270.85
  5. Step 5: Solve for x
    x = 355,270.85/587.55
  6. Step 6: Final answer
    x = 604.66

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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.