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Finding the Fourth Proportional to 587.55, 810.63 and 351.57

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Solution

The fourth proportional to 587.55, 810.63 and 351.57 is: 485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.55 : 810.63 = 351.57 : x
  2. Step 2: Convert to fraction form
    587.55/810.63 = 351.57/x
  3. Step 3: Cross multiply
    587.55x = 810.63 × 351.57
  4. Step 4: Simplify right side
    587.55x = 284,993.19
  5. Step 5: Solve for x
    x = 284,993.19/587.55
  6. Step 6: Final answer
    x = 485.05

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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.