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Finding the Fourth Proportional to 518.76, 715.76 and 332.16

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Solution

The fourth proportional to 518.76, 715.76 and 332.16 is: 458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.76 : 715.76 = 332.16 : x
  2. Step 2: Convert to fraction form
    518.76/715.76 = 332.16/x
  3. Step 3: Cross multiply
    518.76x = 715.76 × 332.16
  4. Step 4: Simplify right side
    518.76x = 237,746.84
  5. Step 5: Solve for x
    x = 237,746.84/518.76
  6. Step 6: Final answer
    x = 458.30

Related Problems

Find fourth proportional to 259.38, 357.88 and 166.08
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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.