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Finding the Fourth Proportional to 445.66, 615.03 and 259.19

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Solution

The fourth proportional to 445.66, 615.03 and 259.19 is: 357.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.66 : 615.03 = 259.19 : x
  2. Step 2: Convert to fraction form
    445.66/615.03 = 259.19/x
  3. Step 3: Cross multiply
    445.66x = 615.03 × 259.19
  4. Step 4: Simplify right side
    445.66x = 159,407.88
  5. Step 5: Solve for x
    x = 159,407.88/445.66
  6. Step 6: Final answer
    x = 357.69

Related Problems

Find fourth proportional to 222.83, 307.51 and 129.59
Half scale
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Double scale
Find fourth proportional to 446.66, 616.41 and 260.19
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.