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Finding the Fourth Proportional to 657.64, 904.50 and 526.40

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Solution

The fourth proportional to 657.64, 904.50 and 526.40 is: 724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.64 : 904.50 = 526.40 : x
  2. Step 2: Convert to fraction form
    657.64/904.50 = 526.40/x
  3. Step 3: Cross multiply
    657.64x = 904.50 × 526.40
  4. Step 4: Simplify right side
    657.64x = 476,128.80
  5. Step 5: Solve for x
    x = 476,128.80/657.64
  6. Step 6: Final answer
    x = 724.00

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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.