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Finding the Fourth Proportional to 518.76, 715.14 and 425.37

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Solution

The fourth proportional to 518.76, 715.14 and 425.37 is: 586.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.76 : 715.14 = 425.37 : x
  2. Step 2: Convert to fraction form
    518.76/715.14 = 425.37/x
  3. Step 3: Cross multiply
    518.76x = 715.14 × 425.37
  4. Step 4: Simplify right side
    518.76x = 304,199.10
  5. Step 5: Solve for x
    x = 304,199.10/518.76
  6. Step 6: Final answer
    x = 586.40

Related Problems

Find fourth proportional to 259.38, 357.57 and 212.69
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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.