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Finding the Fourth Proportional to 615.90, 924.02 and 205.10

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Solution

The fourth proportional to 615.90, 924.02 and 205.10 is: 307.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.90 : 924.02 = 205.10 : x
  2. Step 2: Convert to fraction form
    615.90/924.02 = 205.10/x
  3. Step 3: Cross multiply
    615.90x = 924.02 × 205.10
  4. Step 4: Simplify right side
    615.90x = 189,516.50
  5. Step 5: Solve for x
    x = 189,516.50/615.90
  6. Step 6: Final answer
    x = 307.71

Related Problems

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Half scale
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Double scale
Find fourth proportional to 616.90, 925.52 and 206.10
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.