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Finding the Fourth Proportional to 933.96, 1,289.12 and 541.20

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Solution

The fourth proportional to 933.96, 1,289.12 and 541.20 is: 747.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.96 : 1,289.12 = 541.20 : x
  2. Step 2: Convert to fraction form
    933.96/1,289.12 = 541.20/x
  3. Step 3: Cross multiply
    933.96x = 1,289.12 × 541.20
  4. Step 4: Simplify right side
    933.96x = 697,671.74
  5. Step 5: Solve for x
    x = 697,671.74/933.96
  6. Step 6: Final answer
    x = 747.00

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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.