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Finding the Fourth Proportional to 448.76, 619.08 and 259.70

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Solution

The fourth proportional to 448.76, 619.08 and 259.70 is: 358.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.76 : 619.08 = 259.70 : x
  2. Step 2: Convert to fraction form
    448.76/619.08 = 259.70/x
  3. Step 3: Cross multiply
    448.76x = 619.08 × 259.70
  4. Step 4: Simplify right side
    448.76x = 160,771.01
  5. Step 5: Solve for x
    x = 160,771.01/448.76
  6. Step 6: Final answer
    x = 358.25

Related Problems

Find fourth proportional to 224.38, 309.54 and 129.85
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Double scale
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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.