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Finding the Fourth Proportional to 647.29, 888.47 and 591.93

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Solution

The fourth proportional to 647.29, 888.47 and 591.93 is: 812.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.29 : 888.47 = 591.93 : x
  2. Step 2: Convert to fraction form
    647.29/888.47 = 591.93/x
  3. Step 3: Cross multiply
    647.29x = 888.47 × 591.93
  4. Step 4: Simplify right side
    647.29x = 525,913.81
  5. Step 5: Solve for x
    x = 525,913.81/647.29
  6. Step 6: Final answer
    x = 812.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.