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Finding the Fourth Proportional to 570.25, 853.71 and 433.84

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Solution

The fourth proportional to 570.25, 853.71 and 433.84 is: 649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.25 : 853.71 = 433.84 : x
  2. Step 2: Convert to fraction form
    570.25/853.71 = 433.84/x
  3. Step 3: Cross multiply
    570.25x = 853.71 × 433.84
  4. Step 4: Simplify right side
    570.25x = 370,373.55
  5. Step 5: Solve for x
    x = 370,373.55/570.25
  6. Step 6: Final answer
    x = 649.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.