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Finding the Fourth Proportional to 768.51, 1,060.55 and 436.95

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Solution

The fourth proportional to 768.51, 1,060.55 and 436.95 is: 602.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.51 : 1,060.55 = 436.95 : x
  2. Step 2: Convert to fraction form
    768.51/1,060.55 = 436.95/x
  3. Step 3: Cross multiply
    768.51x = 1,060.55 × 436.95
  4. Step 4: Simplify right side
    768.51x = 463,405.14
  5. Step 5: Solve for x
    x = 463,405.14/768.51
  6. Step 6: Final answer
    x = 602.99

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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.