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Finding the Fourth Proportional to 1,235.03, 1,704.30 and 710.96

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Solution

The fourth proportional to 1,235.03, 1,704.30 and 710.96 is: 981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.03 : 1,704.30 = 710.96 : x
  2. Step 2: Convert to fraction form
    1,235.03/1,704.30 = 710.96/x
  3. Step 3: Cross multiply
    1,235.03x = 1,704.30 × 710.96
  4. Step 4: Simplify right side
    1,235.03x = 1,211,689.13
  5. Step 5: Solve for x
    x = 1,211,689.13/1,235.03
  6. Step 6: Final answer
    x = 981.10

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1.5x scale

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.