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Finding the Fourth Proportional to 933.34, 1,287.68 and 555.14

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Solution

The fourth proportional to 933.34, 1,287.68 and 555.14 is: 765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    933.34 : 1,287.68 = 555.14 : x
  2. Step 2: Convert to fraction form
    933.34/1,287.68 = 555.14/x
  3. Step 3: Cross multiply
    933.34x = 1,287.68 × 555.14
  4. Step 4: Simplify right side
    933.34x = 714,842.68
  5. Step 5: Solve for x
    x = 714,842.68/933.34
  6. Step 6: Final answer
    x = 765.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.