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Finding the Fourth Proportional to 933.78, 1,397.94 and 586

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Solution

The fourth proportional to 933.78, 1,397.94 and 586 is: 877.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.78 : 1,397.94 = 586 : x
  2. Step 2: Convert to fraction form
    933.78/1,397.94 = 586/x
  3. Step 3: Cross multiply
    933.78x = 1,397.94 × 586
  4. Step 4: Simplify right side
    933.78x = 819,192.84
  5. Step 5: Solve for x
    x = 819,192.84/933.78
  6. Step 6: Final answer
    x = 877.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.