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Finding the Fourth Proportional to 612.95, 845.97 and 377.04

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Solution

The fourth proportional to 612.95, 845.97 and 377.04 is: 520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.95 : 845.97 = 377.04 : x
  2. Step 2: Convert to fraction form
    612.95/845.97 = 377.04/x
  3. Step 3: Cross multiply
    612.95x = 845.97 × 377.04
  4. Step 4: Simplify right side
    612.95x = 318,964.53
  5. Step 5: Solve for x
    x = 318,964.53/612.95
  6. Step 6: Final answer
    x = 520.38

Related Problems

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Double scale
Find fourth proportional to 613.95, 847.35 and 378.04
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.