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Finding the Fourth Proportional to 555.65, 833.68 and 339.38

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Solution

The fourth proportional to 555.65, 833.68 and 339.38 is: 509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.65 : 833.68 = 339.38 : x
  2. Step 2: Convert to fraction form
    555.65/833.68 = 339.38/x
  3. Step 3: Cross multiply
    555.65x = 833.68 × 339.38
  4. Step 4: Simplify right side
    555.65x = 282,934.32
  5. Step 5: Solve for x
    x = 282,934.32/555.65
  6. Step 6: Final answer
    x = 509.20

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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.