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Finding the Fourth Proportional to 707.23, 975.99 and 412.51

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Solution

The fourth proportional to 707.23, 975.99 and 412.51 is: 569.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.23 : 975.99 = 412.51 : x
  2. Step 2: Convert to fraction form
    707.23/975.99 = 412.51/x
  3. Step 3: Cross multiply
    707.23x = 975.99 × 412.51
  4. Step 4: Simplify right side
    707.23x = 402,605.63
  5. Step 5: Solve for x
    x = 402,605.63/707.23
  6. Step 6: Final answer
    x = 569.27

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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.