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Finding the Fourth Proportional to 710.92, 981.30 and 503.56

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Solution

The fourth proportional to 710.92, 981.30 and 503.56 is: 695.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.92 : 981.30 = 503.56 : x
  2. Step 2: Convert to fraction form
    710.92/981.30 = 503.56/x
  3. Step 3: Cross multiply
    710.92x = 981.30 × 503.56
  4. Step 4: Simplify right side
    710.92x = 494,143.43
  5. Step 5: Solve for x
    x = 494,143.43/710.92
  6. Step 6: Final answer
    x = 695.08

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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.