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Finding the Fourth Proportional to 642.51, 887.18 and 593.37

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Solution

The fourth proportional to 642.51, 887.18 and 593.37 is: 819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.51 : 887.18 = 593.37 : x
  2. Step 2: Convert to fraction form
    642.51/887.18 = 593.37/x
  3. Step 3: Cross multiply
    642.51x = 887.18 × 593.37
  4. Step 4: Simplify right side
    642.51x = 526,423.03
  5. Step 5: Solve for x
    x = 526,423.03/642.51
  6. Step 6: Final answer
    x = 819.32

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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.