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Finding the Fourth Proportional to 631.51, 950.99 and 551.32

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Solution

The fourth proportional to 631.51, 950.99 and 551.32 is: 830.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.51 : 950.99 = 551.32 : x
  2. Step 2: Convert to fraction form
    631.51/950.99 = 551.32/x
  3. Step 3: Cross multiply
    631.51x = 950.99 × 551.32
  4. Step 4: Simplify right side
    631.51x = 524,299.81
  5. Step 5: Solve for x
    x = 524,299.81/631.51
  6. Step 6: Final answer
    x = 830.23

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.