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Finding the Fourth Proportional to 503.31, 693.18 and 404.76

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Solution

The fourth proportional to 503.31, 693.18 and 404.76 is: 557.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.31 : 693.18 = 404.76 : x
  2. Step 2: Convert to fraction form
    503.31/693.18 = 404.76/x
  3. Step 3: Cross multiply
    503.31x = 693.18 × 404.76
  4. Step 4: Simplify right side
    503.31x = 280,571.54
  5. Step 5: Solve for x
    x = 280,571.54/503.31
  6. Step 6: Final answer
    x = 557.45

Related Problems

Find fourth proportional to 251.66, 346.59 and 202.38
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Double scale
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Similar ratio
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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.