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Finding the Fourth Proportional to 661.94, 912.84 and 529.58

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Solution

The fourth proportional to 661.94, 912.84 and 529.58 is: 730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.94 : 912.84 = 529.58 : x
  2. Step 2: Convert to fraction form
    661.94/912.84 = 529.58/x
  3. Step 3: Cross multiply
    661.94x = 912.84 × 529.58
  4. Step 4: Simplify right side
    661.94x = 483,421.81
  5. Step 5: Solve for x
    x = 483,421.81/661.94
  6. Step 6: Final answer
    x = 730.31

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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.