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Finding the Fourth Proportional to 713.61, 983.07 and 503.55

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Solution

The fourth proportional to 713.61, 983.07 and 503.55 is: 693.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.61 : 983.07 = 503.55 : x
  2. Step 2: Convert to fraction form
    713.61/983.07 = 503.55/x
  3. Step 3: Cross multiply
    713.61x = 983.07 × 503.55
  4. Step 4: Simplify right side
    713.61x = 495,024.90
  5. Step 5: Solve for x
    x = 495,024.90/713.61
  6. Step 6: Final answer
    x = 693.69

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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.