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Finding the Fourth Proportional to 694.75, 1,038.99 and 530.27

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Solution

The fourth proportional to 694.75, 1,038.99 and 530.27 is: 793.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.75 : 1,038.99 = 530.27 : x
  2. Step 2: Convert to fraction form
    694.75/1,038.99 = 530.27/x
  3. Step 3: Cross multiply
    694.75x = 1,038.99 × 530.27
  4. Step 4: Simplify right side
    694.75x = 550,945.23
  5. Step 5: Solve for x
    x = 550,945.23/694.75
  6. Step 6: Final answer
    x = 793.01

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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.