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Finding the Fourth Proportional to 554.99, 831.74 and 401.19

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Solution

The fourth proportional to 554.99, 831.74 and 401.19 is: 601.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.99 : 831.74 = 401.19 : x
  2. Step 2: Convert to fraction form
    554.99/831.74 = 401.19/x
  3. Step 3: Cross multiply
    554.99x = 831.74 × 401.19
  4. Step 4: Simplify right side
    554.99x = 333,683.76
  5. Step 5: Solve for x
    x = 333,683.76/554.99
  6. Step 6: Final answer
    x = 601.25

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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.