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Finding the Fourth Proportional to 503.99, 695.50 and 283.01

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Solution

The fourth proportional to 503.99, 695.50 and 283.01 is: 390.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.99 : 695.50 = 283.01 : x
  2. Step 2: Convert to fraction form
    503.99/695.50 = 283.01/x
  3. Step 3: Cross multiply
    503.99x = 695.50 × 283.01
  4. Step 4: Simplify right side
    503.99x = 196,831.10
  5. Step 5: Solve for x
    x = 196,831.10/503.99
  6. Step 6: Final answer
    x = 390.55

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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.