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Finding the Fourth Proportional to 847.50, 1,270.38 and 555.24

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Solution

The fourth proportional to 847.50, 1,270.38 and 555.24 is: 832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    847.50 : 1,270.38 = 555.24 : x
  2. Step 2: Convert to fraction form
    847.50/1,270.38 = 555.24/x
  3. Step 3: Cross multiply
    847.50x = 1,270.38 × 555.24
  4. Step 4: Simplify right side
    847.50x = 705,365.79
  5. Step 5: Solve for x
    x = 705,365.79/847.50
  6. Step 6: Final answer
    x = 832.29

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Half scale
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Double scale
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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.