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Finding the Fourth Proportional to 572.57, 853.39 and 555.86

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Solution

The fourth proportional to 572.57, 853.39 and 555.86 is: 828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.57 : 853.39 = 555.86 : x
  2. Step 2: Convert to fraction form
    572.57/853.39 = 555.86/x
  3. Step 3: Cross multiply
    572.57x = 853.39 × 555.86
  4. Step 4: Simplify right side
    572.57x = 474,365.07
  5. Step 5: Solve for x
    x = 474,365.07/572.57
  6. Step 6: Final answer
    x = 828.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.