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Finding the Fourth Proportional to 1,028.99, 1,543.59 and 335.63

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Solution

The fourth proportional to 1,028.99, 1,543.59 and 335.63 is: 503.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.99 : 1,543.59 = 335.63 : x
  2. Step 2: Convert to fraction form
    1,028.99/1,543.59 = 335.63/x
  3. Step 3: Cross multiply
    1,028.99x = 1,543.59 × 335.63
  4. Step 4: Simplify right side
    1,028.99x = 518,081.74
  5. Step 5: Solve for x
    x = 518,081.74/1,028.99
  6. Step 6: Final answer
    x = 503.48

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Double scale
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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.