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Finding the Fourth Proportional to 555.42, 766.76 and 369.23

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Solution

The fourth proportional to 555.42, 766.76 and 369.23 is: 509.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.42 : 766.76 = 369.23 : x
  2. Step 2: Convert to fraction form
    555.42/766.76 = 369.23/x
  3. Step 3: Cross multiply
    555.42x = 766.76 × 369.23
  4. Step 4: Simplify right side
    555.42x = 283,105.11
  5. Step 5: Solve for x
    x = 283,105.11/555.42
  6. Step 6: Final answer
    x = 509.71

Related Problems

Find fourth proportional to 277.71, 383.38 and 184.61
Half scale
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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.