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Finding the Fourth Proportional to 1,561, 2,341.88 and 535

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Solution

The fourth proportional to 1,561, 2,341.88 and 535 is: 802.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561 : 2,341.88 = 535 : x
  2. Step 2: Convert to fraction form
    1,561/2,341.88 = 535/x
  3. Step 3: Cross multiply
    1,561x = 2,341.88 × 535
  4. Step 4: Simplify right side
    1,561x = 1,252,905.80
  5. Step 5: Solve for x
    x = 1,252,905.80/1,561
  6. Step 6: Final answer
    x = 802.63

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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.