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Finding the Fourth Proportional to 710.33, 979.56 and 430.61

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Solution

The fourth proportional to 710.33, 979.56 and 430.61 is: 593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.33 : 979.56 = 430.61 : x
  2. Step 2: Convert to fraction form
    710.33/979.56 = 430.61/x
  3. Step 3: Cross multiply
    710.33x = 979.56 × 430.61
  4. Step 4: Simplify right side
    710.33x = 421,803.43
  5. Step 5: Solve for x
    x = 421,803.43/710.33
  6. Step 6: Final answer
    x = 593.82

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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.