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Finding the Fourth Proportional to 543.37, 815.06 and 255.01

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Solution

The fourth proportional to 543.37, 815.06 and 255.01 is: 382.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.37 : 815.06 = 255.01 : x
  2. Step 2: Convert to fraction form
    543.37/815.06 = 255.01/x
  3. Step 3: Cross multiply
    543.37x = 815.06 × 255.01
  4. Step 4: Simplify right side
    543.37x = 207,848.45
  5. Step 5: Solve for x
    x = 207,848.45/543.37
  6. Step 6: Final answer
    x = 382.52

Related Problems

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Half scale
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Double scale
Find fourth proportional to 544.37, 816.56 and 256.01
Similar ratio
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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.