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Finding the Fourth Proportional to 704.94, 1,056.70 and 523.15

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Solution

The fourth proportional to 704.94, 1,056.70 and 523.15 is: 784.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.94 : 1,056.70 = 523.15 : x
  2. Step 2: Convert to fraction form
    704.94/1,056.70 = 523.15/x
  3. Step 3: Cross multiply
    704.94x = 1,056.70 × 523.15
  4. Step 4: Simplify right side
    704.94x = 552,812.61
  5. Step 5: Solve for x
    x = 552,812.61/704.94
  6. Step 6: Final answer
    x = 784.20

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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.