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Finding the Fourth Proportional to 585.35, 807.50 and 386.53

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Solution

The fourth proportional to 585.35, 807.50 and 386.53 is: 533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.35 : 807.50 = 386.53 : x
  2. Step 2: Convert to fraction form
    585.35/807.50 = 386.53/x
  3. Step 3: Cross multiply
    585.35x = 807.50 × 386.53
  4. Step 4: Simplify right side
    585.35x = 312,122.98
  5. Step 5: Solve for x
    x = 312,122.98/585.35
  6. Step 6: Final answer
    x = 533.22

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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.