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Finding the Fourth Proportional to 711.41, 981.59 and 416.77

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Solution

The fourth proportional to 711.41, 981.59 and 416.77 is: 575.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.41 : 981.59 = 416.77 : x
  2. Step 2: Convert to fraction form
    711.41/981.59 = 416.77/x
  3. Step 3: Cross multiply
    711.41x = 981.59 × 416.77
  4. Step 4: Simplify right side
    711.41x = 409,092.73
  5. Step 5: Solve for x
    x = 409,092.73/711.41
  6. Step 6: Final answer
    x = 575.05

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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.