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Finding the Fourth Proportional to 710.65, 981.44 and 633.34

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Solution

The fourth proportional to 710.65, 981.44 and 633.34 is: 874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.65 : 981.44 = 633.34 : x
  2. Step 2: Convert to fraction form
    710.65/981.44 = 633.34/x
  3. Step 3: Cross multiply
    710.65x = 981.44 × 633.34
  4. Step 4: Simplify right side
    710.65x = 621,585.21
  5. Step 5: Solve for x
    x = 621,585.21/710.65
  6. Step 6: Final answer
    x = 874.67

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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.