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Finding the Fourth Proportional to 612.53, 845.28 and 332.76

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Solution

The fourth proportional to 612.53, 845.28 and 332.76 is: 459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.53 : 845.28 = 332.76 : x
  2. Step 2: Convert to fraction form
    612.53/845.28 = 332.76/x
  3. Step 3: Cross multiply
    612.53x = 845.28 × 332.76
  4. Step 4: Simplify right side
    612.53x = 281,275.37
  5. Step 5: Solve for x
    x = 281,275.37/612.53
  6. Step 6: Final answer
    x = 459.21

Related Problems

Find fourth proportional to 306.26, 422.64 and 166.38
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Double scale
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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.